There aren’t a ton of reasons you’d be heading to Judiciary Square on the weekend, but be aware that the entire Metro station will be closed on Saturday, from 7 a.m. to 8 p.m., due to security measures for the G20 Summit. The National Building Museum, where the summit of panicked world finance ministers is being held, will also be closed all weekend. And note that if you work late on Friday night, the F Street entrance at Judiciary Square will close at 7 p.m., but you can still access the station that evening by using the 4th and D Street entrance.